removing the no longer existing second parameter to sk_data_ready
doesn't seem it ever served a purpose.

diff -rupN vsock-only/linux/notify.c vsock-only.new/linux/notify.c
--- vsock-only/linux/notify.c	2013-11-05 23:33:27.000000000 -0500
+++ vsock-only.new/linux/notify.c	2014-10-05 23:46:47.943304728 -0400
@@ -515,8 +515,11 @@ VSockVmciHandleWrote(struct sock *sk,
    vsk = vsock_sk(sk);
    PKT_FIELD(vsk, sentWaitingRead) = FALSE;
 #endif
-
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 15, 0)
+   sk->sk_data_ready(sk);
+#else
    sk->sk_data_ready(sk, 0);
+#endif
 }
 
 
diff -rupN vsock-only/linux/notifyQState.c vsock-only.new/linux/notifyQState.c
--- vsock-only/linux/notifyQState.c	2013-11-05 23:33:27.000000000 -0500
+++ vsock-only.new/linux/notifyQState.c	2014-10-05 23:46:33.231303931 -0400
@@ -164,7 +164,11 @@ VSockVmciHandleWrote(struct sock *sk,
                      struct sockaddr_vm *dst,    // IN: unused
                      struct sockaddr_vm *src)    // IN: unused
 {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 15, 0)
+   sk->sk_data_ready(sk);
+#else
    sk->sk_data_ready(sk, 0);
+#endif
 }
 
 
@@ -566,7 +570,11 @@ VSockVmciNotifyPktRecvPostDequeue(struct
       }
 
       /* See the comment in VSockVmciNotifyPktSendPostEnqueue */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 15, 0)
+      sk->sk_data_ready(sk);
+#else
       sk->sk_data_ready(sk, 0);
+#endif
    }
 
    return err;